I lately use Facebook mostly for my activism. Even private stuff needs to fit with my image.

Do not. Befriended so many other activists that most of my feedback is not parties and vacations but handmade jewelry (done of charity sales) and horrid stories from Eastern fronts and complains about Putin. None of that makes me hate my life. And I am interested in vacations of my friends... because my friends are interesting people who go on interesting vacations. Most shallow people unfriended me gradually.